Shuttle



w. E. CO'MI'SKY.

SHUTTLE.

APPLICATION HLED seer. 7. 1920.

1,378,837, Patented May 24,1921.

. 6 Eml- WILLIAM F. COMISKY, OIE MIDDLETOWN, CONNECTICUT.

SHUTTLE.

Specification of Letters Patent.

Patented May 24, 1921.

Application filed September 7, 1920. Serial No. 408,413.

T 0 all whom, it may concern Be it known that I, WILLIAMF. CoMIsKY,

a citizen of the United States, residing at Middletown, in the county of Middlesex and State of Connecticut, have invented new and useful Improvements in Shuttles, of which the following is a specification.

This invention relates to certain new and useful improvements in shuttles, and the primary object thereof is to provide 1mproved means for tensioning the yarn of thread in its passage to the delivery eye.

A further object, of the invention 1s to provide tensioning means which acts to prevent the thread from moving, as by jumping from between the two tensionlng elements, and further to provide tensioning means which is of simple and economical construction, which can be easily applied to the shuttle and which is positive and certain in its operation.

Further and other objects will be later set forth and manifested in the course of the following description.

In the drawings:

Figure 1, isa top plan View of a fragment of a shuttle showing the present invention applied thereto;

Fig. 2, is a section on line 2-2 of Fig. 1; and

Fig. 3, is a similar view on line 33 of Fig. 1.

In proceeding in accordance with the present invention, the body of the shuttle 1s provided with a pair of opposed guide projections 1, located in the passage or throat between the bobbin chamber and the delivery eye, the projections being spaced at their inner confronting faces and cut out of the wood of which the shuttle is made.

A pair of sheet metal U-shaped tensioning members 2, and 2 are employed which conformablyreceive the shuttle projections as depicted in the drawings. These mem bers 2, are each mounted on a common pin 3,

which latter extends transversely across the shuttle.

The one member 2 is or maybe stationarily mounted on'its projection 1, while the opposite member 2 1s freely slidable on the pin and with relation to its projection, and is held against the memher 1, by the tension exerted there against by a light coil spring 4. The spring 4:, 1s mounted in a transverse chamber 5, formed 56 in the shuttle body at a point above the pin 3. By locating the spring above the center of the plate, it will be apparent that the top of the plate will be tilted or inclined toward the other plate so as to contact with the latter. In this manner, a somewhat V-shaped space is formed between the plates, wlth the result that the thread or yarn will be prevented from jumping or moving up out of between the plates. For the purpose of enabling the yarn 9r thread to be easily introduced between the plates, the project1ons 1, which support and guide the plates, and the top edges of the latter are beveled downwardly to form a natural valley in which the thread or yarn will enter, thus facilitating its entry into the space between the plates.

The chamber 5, is closed by a threaded plug 6, which acts to hold the spring 4, in position.

In operation it will be seen that the thread or yarn Y passes from the bobbin, between the two plates and thence out through the delivery eye. In its passage, it will be seen that the thread moves below the point of location of the spring, consequently, in order to move up and out from between the plates, it is necessary that the thread pass the point upon which the spring directly acts, the tension of the spring being such as to prevent accidental movement of the thread upwardly between the lates.

Having thus descri ed my invention, what I claim as new and desire to secure by Letters Patent is 1. In a shuttle having a pair of opposed guiding projections formed in the throat thereof, a substantially U-shaped plate mounted over each projection, a pin extending transversely of the shuttle and passing through each plate, and a coil spring in the shuttle engaged at one end with one plate at a point above the pin and adjacent the top of the plate, to tension the latter.

2. In a shuttle, a pair of independent thread tensioning. members having approximately vertical confronting faces between which the thread passes, means to loosely mount one member, and means to effect tilting of said member relative to the other member to cause the top of the first member to engage the top of the other member.

3. In a shuttle, a pair of thread tensioning U-shaped members, guides for the members engaging the sides of the members, and

a coil spring extending transversely of the members and engaging one thereof to tilt the latter toward the other member.

4. A shuttle having thread tensioning means embodying spaced elements, and a coil spring to urge one element toward the other located above the centers of the elements to thereby cause the formation of an inverted V-shaped space between the effective faces of the elements.

5. A shuttle having a stationary plate, and an opposing loose plate, a pin on which each plate is mounted, and a coil spring above the pin to move the loose plate toward and in engagement with the stationary plate at points above the pin.

6. In a shuttle, a pair of opposed thread engaging members, means to mount the members to hold same against outward movement relative to the shuttle, and means spaced from the mounting means to cause the members to contact at their tops and be spaced at their bottoms, said second means 

